<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>IFE task 19</title>
    <link rel="stylesheet" href="css/style.css">
</head>
<body>

<input type="text" id="ipt">
<span id="btn_box">
    <button id="left_in">左侧入</button>
    <button id="right_in">右侧入</button>
    <button id="left_out">左侧出</button>
    <button id="right_out">右侧出</button>
    <button id="sort">冒泡排序</button>
    <button id="random">随机三十组数据</button>
</span>
<div id="box"></div>

<script src="js/app.js"></script>
</body>
</html>